Blood cell discriminator and counter utilizing transmitted and s

Details Blood cell discriminator and counter utilizing transmitted and s Blood cell discriminator and counter utilizing transmitted and s

1983-11-14

1986-04-29

Heyman, John S.

Electrical pulse counters, pulse dividers, or shift registers: c

Applications

Counting animate or inanimate entities

356 39, G01N 2147

Patent

active

045861900

ABSTRACT:
A blood counter comprising a sheathed flow cell; a light source including what has the wavelengths causing absorption of light by hemoglobin in the blood; means for receiving transmitted light; means for receiving the scattered light; a decision assembly for judging, based on the output signals detected by means for receiving the transmitted light and scattered light, (i) the flowing cells therein to be a red blood cell if the degree of absorption is larger than the preselected level and (ii) the other to be a blood platelet if the intensity of the scattered light is larger than a certain level and if the degree of absorption is smaller than said preselected level; and a counter assembly for counting out the red blood cells and blood platelets.

REFERENCES:
patent: 2875666 (1959-03-01), Parker et al.
patent: 3827805 (1974-08-01), Mansfield et al.
patent: 4027973 (1977-06-01), Kaye

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